August 2009
Intermediate to advanced
893 pages
26h 48m
English
Content preview from Database Systems: Concepts, Design and Applications
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10.2. Normalization
Normalization is a process of decomposing a set of relations with anomalies to produce smaller and well-structured relations that contain minimum or no redundancy. It is a formal process of deciding which attributes should be grouped together in a relation. Normalization provides the designer with a systematic and scientific process of grouping of attributes in a relation. Using normalization, any change to the values stored in the database can be achieved with the fewest possible update operations.
Therefore, the process of normalization can be defined as a procedure of successive reduction of a given collection of relational schemas based on their FDs and primary keys to achieve some desirable form of minimised redundancy, ...
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